d16a6 engine help

hello honda nation! i have recently acquired a 90si hatch. its clean in and out, only problem is it has a hole in the block. i dont know too much about honda blocks, so im aiming to get some help about which block i can match up with the a6 head, assuming i cant find another a6 block. i look forward to learning from you all. ive tried other forums and websites, but i cant seem to get a straight answer. any help would be nice, thanx! hello honda nation! i have recently acquired a 90si hatch. its clean in and out, only problem is it has a hole in the block. i dont know too much about honda blocks, so im aiming to get some help about which block i can match up with the a6 head, assuming i cant find another a6 block. i look forward to learning from you all. ive tried other forums and websites, but i cant seem to get a straight answer. any help would be nice, thanx! hello honda nation! i have recently acquired a 90si hatch. its clean in and out, only problem is it has a hole in the block. i dont know too much about honda blocks, so im aiming to get some help about which block i can match up with the a6 head, assuming i cant find another a6 block. i look forward to learning from you all. ive tried other forums and websites, but i cant seem to get a straight answer. any help would be nice, thanx! hello honda nation! i have recently acquired a 90si hatch. its clean in and out, only problem is it has a hole in the block. i dont know too much about honda blocks, so im aiming to get some help about which block i can match up with the a6 head, assuming i cant find another a6 block. i look forward to learning from you all. ive tried other forums and websites, but i cant seem to get a straight answer. any help would be nice, thanx!

ok, so i can put almost any d block on my a6 head, are there any further modifications needed? i saw a d15b7 engine in the junkyard. will that block fit without modification. will it bolt right up, or do i need parts from the d15?